Out singer Troye Sivan has been joined the cast of Boy Erased, the upcoming movie adaption of Garrard Conley’s memoir about his time in a gay conversion camp.

He joins Nicole Kidman, Cherry Jones, Russell Crowe, Xavier Dolan, and The Red Hot Chilli Peppers’ Flea in the film, which will be directed by actor-director Joel Egerton. Oscar nominee Lucas Hedges (Manchester by the Sea ) will play Jared, a character based on Conley.

At 19, Conley was outed by his Baptist pastor father (Crowe) and mother (Kidman), who gave him the choice of entering gay conversion therapy or be kicked out of the house and shunned by his family and community.

"I have worked with many people to ensure that my story and the story of other queer folks who suffered through conversion therapy would not be stereotypical or threadbare," Conley wrote on his website. "Every draft has been sent to me in the first round, and though the draft may change, I believe it will only change for the better. The team is working hard to get this story right."

Best known as a musician and social-media personality, Sivan does have acting experience—he played a young Logan in X-Men Origins: Wolverine. "This movie is gonna be so important, he wrote on Twitter, "and I'm honored to be part of it."

Boy Erased is expected to hit theaters some time next year.